vjw0rm | 29ef503bce31e24fa949e6eac1c068019b0ef4d4f9ce91af55acde6d06698541

Analysis

max time kernel
147s
max time network
167s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
07-11-2022 11:32

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General

Target

PO.js
Size

16KB
MD5

d9cf358d33e0b914b807f31d6c58c5a7
SHA1

8eea7bf764edac96eb2a06f3a7301f6cec2d2bb8
SHA256

29ef503bce31e24fa949e6eac1c068019b0ef4d4f9ce91af55acde6d06698541
SHA512

06802248fa1440aceb565efdad5ac752d6f2469add00a0e1decc3e398b53a2975f80b55924fe98402c0e3c2ca4850c842a77b1ba189ea0067934028a6e90f6a9
SSDEEP

192:BdmxVneKi3B7oB8AmIufpDU1qLyAFsagU13pR8UAEbfK+bE+1FauvG6JY46272ii:eViR0B81Is61aykvpRrK+bZR72twdu

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

http://212.193.30.230:6505

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Blocklisted process makes network request 7 IoCs

flow	pid	Process
3	1004	wscript.exe
5	2224	wscript.exe
32	2224	wscript.exe
42	2224	wscript.exe
55	2224	wscript.exe
69	2224	wscript.exe
74	2224	wscript.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 4 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\EUdyiwsLkK.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\EUdyiwsLkK.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PO.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PO.js	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\2JZFR52JWJ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\PO.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1004 wrote to memory of 2224	1004	wscript.exe	76
PID 1004 wrote to memory of 2224	1004	wscript.exe	76

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\PO.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1004
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\EUdyiwsLkK.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  PID:2224

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\EUdyiwsLkK.js

Filesize
5KB

MD5
fdb563c457afbde4219e1a83f742a8be

SHA1
8e217d47db9654e839273115479a2121745250a5

SHA256
eedb0f6bd119171b632c131672eb59ac547464ddaf727a062af3c4b27edfbe49

SHA512
0c8eacd5a8d82fe264a11611630211438ae3721f93a4610a530312d08ae7e87689527c82640a22b7287c2d38add261ed75c4fbcdb0e27f427726c920b623a81c

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